cliveb;155498 Wrote: 
> Does this happen even if the display is set to 0 (Dark)?

I think very slightly.  Take a look at the display powered but at 0
brightess in a darkened room - you will see glowing red filaments. 
These are the cathode filaments, see:

http://en.wikipedia.org/wiki/Vacuum_fluorescent_display

http://hem.passagen.se/communication/vfd.html

Those VFDs are kept red-hot as long as power is applied, even when the
display is dark.  They are -very slowly- degrading - emitting electrons
on a continuous basis.  While they're not boiling away like an ice cube,
over the years it does add up.

May take 20 years (who knows) but they don't last forever.

Dimming the display away from full brightness also avoids burning in
the phosphors.  Burn-in on the displays used in the Squeezebox and the
Transporter is very rare but there was a mention or two on the forums
about this.  So on idle screensaver mode you'd be wise to set your
brightness less than full.


-- 
Mark Lanctot
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View this thread: http://forums.slimdevices.com/showthread.php?t=29777

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